Assaf may refer to: Assaf (name), a given name and surname Assaf (sheep), a breed from Israel Academy of Science of South Africa (ASSAf) The Book of Assaf, the earliest medical book written in He
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f6a4058ebc0a2529cdedd8606956fb88615fa0edd4ad7b6fe4ccdb53a4283e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b18f7a8e-4b1f-4d50-bce6-fc0abd780407.json and https://artists.proofprofile.net/proofs/artist/b18f7a8e-4b1f-4d50-bce6-fc0abd780407.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee7d1236cda3043b7248ed135d4bcb3baf2ae0a10fb95dba4c12bdf230be904. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA9MK1600394.
Black Sunset Music Year Mix 2017 - Mixed By Assaf
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024010430a97d1038225882c744ca838cac20e98f49f5ab7805e3703b052b12f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF711803409.
Trinity (Sound Quelle & Max Meyer Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7185f236315d91555ed6592e50eac1f6833a6ea799907fbcb68a7ce7530990. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA9MK1800154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7ebe6b1a36560969bf5b075707749a474768c0d326dd7852fc726cf7fbcb2d. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF712001826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a844555310c17a42c2aeb17df1ce5257d45b5f55a15d776301231f54d5e624. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKRMQ2000958.
A State Of Trance FOREVER Spotlight: AVIRA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0c713f7669ab2b9590d4d0cc64d5d4d903257b4a99ecc5600e5dbf260fa62d. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF712109549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43318c139c80a62a05be7b1f2bf3f3e549c48cc4b06d32a8fb30850ba962e33. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF712003564.
Easy to Love - Tanner Wilfong & Assaf Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23de0c88fd835e3b96e29173d21455e9d2c54fae2606c050752b0410cd0854a0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF712301034.
Easy To Love (Mixed) - Tanner Wilfong & Assaf Remix
A State of Trance Year Mix 2023 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1838d586200258bf936ece2b7ae8406948b87420350f22d7ba221b64f0ddaf4c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF712308628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edc7e13cc06a1d8fafa4b2a71adf1800b0ce10fc49d1a54075f077724e1d294. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLD681400521.
A State Of Trance Year Mix 2019 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f488a13236009af32556a027eb9cc4e731bed7ea320cacfe30f1973c5bb8a1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF711912918.
A State Of Trance 2019 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43b79839b3f6e0a9994194023e6c46bc2496c38c9a27848b277be672b6879a9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF711902853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e6794510c14849609f46fb13ff8e54c1e5f85fff52b4e588b6964701886ba7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLF711903206.